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micropython/cc3200/mptask.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2015 Daniel Campora
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include "py/mpconfig.h"
#include MICROPY_HAL_H
#include "py/obj.h"
#include "py/runtime.h"
#include "py/gc.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "rom_map.h"
#include "pin.h"
#include "prcm.h"
#include "interrupt.h"
#include "pybuart.h"
#include "pybpin.h"
#include "pybrtc.h"
#include "pyexec.h"
#include "gccollect.h"
#include "gchelper.h"
#include "readline.h"
#include "mperror.h"
#include "simplelink.h"
#include "modnetwork.h"
#include "modwlan.h"
#include "serverstask.h"
#include "telnet.h"
#include "debug.h"
#include "ff.h"
#include "diskio.h"
#include "sflash_diskio.h"
#include "mpexception.h"
#include "random.h"
#include "pybi2c.h"
#include "pybsd.h"
#include "pins.h"
#include "pybsleep.h"
#include "mpcallback.h"
/******************************************************************************
DECLARE PRIVATE CONSTANTS
******************************************************************************/
/******************************************************************************
DECLARE PRIVATE FUNCTIONS
******************************************************************************/
STATIC void mptask_pre_init (void);
STATIC void mptask_init_sflash_filesystem (void);
STATIC void mptask_enter_ap_mode (void);
STATIC void mptask_create_main_py (void);
/******************************************************************************
DECLARE PUBLIC DATA
******************************************************************************/
#ifdef DEBUG
OsiTaskHandle svTaskHandle;
#endif
/******************************************************************************
DECLARE PRIVATE DATA
******************************************************************************/
static FATFS *sflash_fatfs;
static const char fresh_main_py[] = "# main.py -- put your code here!\r\n";
static const char fresh_boot_py[] = "# boot.py -- run on boot-up\r\n"
"# can run arbitrary Python, but best to keep it minimal\r\n";
/******************************************************************************
DECLARE PUBLIC FUNCTIONS
******************************************************************************/
void TASK_Micropython (void *pvParameters) {
// initialize the garbage collector with the top of our stack
uint32_t sp = gc_helper_get_sp();
gc_collect_init (sp);
bool safeboot = false;
FRESULT res;
mptask_pre_init();
soft_reset:
// GC init
gc_init(&_boot, &_eheap);
// MicroPython init
mp_init();
mp_obj_list_init(mp_sys_path, 0);
mp_obj_list_init(mp_sys_argv, 0);
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
// execute all basic initializations
mpexception_init0();
mpcallback_init0();
pybsleep_init0();
mperror_init0();
uart_init0();
pin_init0();
readline_init0();
mod_network_init0();
#if MICROPY_HW_ENABLE_RNG
rng_init0();
#endif
// we are alive, so let the world know it
mperror_enable_heartbeat();
#ifdef LAUNCHXL
// configure the stdio uart pins with the correct alternate functions
// param 3 ("mode") is DON'T CARE" for AFs others than GPIO
pin_config ((pin_obj_t *)&pin_GPIO1, PIN_MODE_3, 0, PIN_TYPE_STD_PU, PIN_STRENGTH_2MA);
pin_config ((pin_obj_t *)&pin_GPIO2, PIN_MODE_3, 0, PIN_TYPE_STD_PU, PIN_STRENGTH_2MA);
// instantiate the stdio uart
mp_obj_t args[2] = {
mp_obj_new_int(MICROPY_STDIO_UART),
mp_obj_new_int(MICROPY_STDIO_UART_BAUD),
};
pyb_stdio_uart = pyb_uart_type.make_new((mp_obj_t)&pyb_uart_type, MP_ARRAY_SIZE(args), 0, args);
// create a callback for the uart, in order to enable the rx interrupts
uart_callback_new (pyb_stdio_uart, mp_const_none, MICROPY_STDIO_UART_RX_BUF_SIZE, INT_PRIORITY_LVL_3);
#else
pyb_stdio_uart = MP_OBJ_NULL;
#endif
pybsleep_reset_cause_t rstcause = pybsleep_get_reset_cause();
if (rstcause < PYB_SLP_SOFT_RESET) {
if (rstcause == PYB_SLP_HIB_RESET) {
// when waking up from hibernate we just want
// to enable simplelink and leave it as is
wlan_first_start();
}
else {
// only if not comming out of hibernate or a soft reset
mptask_enter_ap_mode();
#ifndef DEBUG
safeboot = PRCMIsSafeBootRequested();
#endif
}
// enable telnet and ftp
servers_start();
}
// initialize the serial flash file system
mptask_init_sflash_filesystem();
// append the flash paths to the system path
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash_slash_lib));
// reset config variables; they should be set by boot.py
MP_STATE_PORT(pyb_config_main) = MP_OBJ_NULL;
if (!safeboot) {
// run boot.py, if it exists
const char *boot_py = "boot.py";
res = f_stat(boot_py, NULL);
if (res == FR_OK) {
int ret = pyexec_file(boot_py);
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
// flash the system led
mperror_signal_error();
}
}
}
// now we initialise sub-systems that need configuration from boot.py,
// or whose initialisation can be safely deferred until after running
// boot.py.
// at this point everything is fully configured and initialised.
if (!safeboot) {
// run the main script from the current directory.
if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
const char *main_py;
if (MP_STATE_PORT(pyb_config_main) == MP_OBJ_NULL) {
main_py = "main.py";
} else {
main_py = mp_obj_str_get_str(MP_STATE_PORT(pyb_config_main));
}
res = f_stat(main_py, NULL);
if (res == FR_OK) {
int ret = pyexec_file(main_py);
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
// flash the system led
mperror_signal_error();
}
}
}
}
// main script is finished, so now go into REPL mode.
// the REPL mode can change, or it can request a soft reset.
for ( ; ; ) {
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
if (pyexec_raw_repl() != 0) {
break;
}
} else {
if (pyexec_friendly_repl() != 0) {
break;
}
}
}
soft_reset_exit:
// soft reset
pybsleep_signal_soft_reset();
mp_printf(&mp_plat_print, "PYB: soft reboot\n");
sflash_disk_flush();
#if MICROPY_HW_HAS_SDCARD
pybsd_deinit();
#endif
goto soft_reset;
}
/******************************************************************************
DEFINE PRIVATE FUNCTIONS
******************************************************************************/
__attribute__ ((section (".boot")))
STATIC void mptask_pre_init (void) {
#if MICROPY_HW_ENABLE_RTC
pybrtc_init();
#endif
// Create the simple link spawn task
ASSERT (OSI_OK == VStartSimpleLinkSpawnTask(SIMPLELINK_SPAWN_TASK_PRIORITY));
// Allocate memory for the flash file system
ASSERT ((sflash_fatfs = mem_Malloc(sizeof(FATFS))) != NULL);
// this one allocates memory for the nvic vault
pybsleep_pre_init();
// this one allocates mameory for the WLAN semaphore
wlan_init0();
#if MICROPY_HW_HAS_SDCARD
pybsd_init0();
#endif
#ifdef DEBUG
ASSERT (OSI_OK == osi_TaskCreate(TASK_Servers,
(const signed char *)"Servers",
SERVERS_STACK_SIZE, NULL, SERVERS_PRIORITY, &svTaskHandle));
#else
ASSERT (OSI_OK == osi_TaskCreate(TASK_Servers,
(const signed char *)"Servers",
SERVERS_STACK_SIZE, NULL, SERVERS_PRIORITY, NULL));
#endif
}
STATIC void mptask_init_sflash_filesystem (void) {
FILINFO fno;
#if _USE_LFN
fno.lfname = NULL;
fno.lfsize = 0;
#endif
// Initialise the local flash filesystem.
// Create it if needed, and mount in on /flash.
// try to mount the flash
FRESULT res = f_mount(sflash_fatfs, "/flash", 1);
if (res == FR_NO_FILESYSTEM) {
// no filesystem, so create a fresh one
res = f_mkfs("/flash", 1, 0);
if (res == FR_OK) {
// success creating fresh LFS
} else {
__fatal_error("failed to create /flash");
}
// create empty main.py
mptask_create_main_py();
} else if (res == FR_OK) {
// mount sucessful
if (FR_OK != f_stat("/flash/main.py", &fno)) {
// create empty main.py
mptask_create_main_py();
}
} else {
__fatal_error("failed to create /flash");
}
// The current directory is used as the boot up directory.
// It is set to the internal flash filesystem by default.
f_chdrive("/flash");
// Make sure we have a /flash/boot.py. Create it if needed.
res = f_stat("/flash/boot.py", &fno);
if (res == FR_OK) {
if (fno.fattrib & AM_DIR) {
// exists as a directory
// TODO handle this case
// see http://elm-chan.org/fsw/ff/img/app2.c for a "rm -rf" implementation
} else {
// exists as a file, good!
}
} else {
// doesn't exist, create fresh file
FIL fp;
f_open(&fp, "/flash/boot.py", FA_WRITE | FA_CREATE_ALWAYS);
UINT n;
f_write(&fp, fresh_boot_py, sizeof(fresh_boot_py) - 1 /* don't count null terminator */, &n);
// TODO check we could write n bytes
f_close(&fp);
}
}
STATIC void mptask_enter_ap_mode (void) {
// enable simplelink in low power mode
wlan_sl_enable (ROLE_AP, MICROPY_PORT_WLAN_AP_SSID, strlen(MICROPY_PORT_WLAN_AP_SSID), MICROPY_PORT_WLAN_AP_SECURITY,
MICROPY_PORT_WLAN_AP_KEY, strlen(MICROPY_PORT_WLAN_AP_KEY), MICROPY_PORT_WLAN_AP_CHANNEL);
}
STATIC void mptask_create_main_py (void) {
// create empty main.py
FIL fp;
f_open(&fp, "/flash/main.py", FA_WRITE | FA_CREATE_ALWAYS);
UINT n;
f_write(&fp, fresh_main_py, sizeof(fresh_main_py) - 1 /* don't count null terminator */, &n);
f_close(&fp);
}
STATIC mp_obj_t pyb_main(mp_obj_t main) {
if (MP_OBJ_IS_STR(main)) {
MP_STATE_PORT(pyb_config_main) = main;
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(pyb_main_obj, pyb_main);
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